Refractory gas furnace



March 27, 1928.

J. ROSS REFRACTORY GAS FURNACE 3 Sheets-Sheet 2 Filed July 2 1927 INVENTOR (lo/7n Ross @M ATTORNEY I March27, 1928. 1,664,267

J. ROSS REFRACTORY GAS FURNACE Filed qulyz 1927 3 Sheets-Sheet- 3 INVENTOR Jo/1n Ros ATTORNEY Patented Mar. 27, 1928.

UNITED STATES maze? PATENT oFF cE. j

JOHN ROSS, OF ST. ALBAN S, NEW JERSEY.

REFRACTORY GAS FURNACE. 3

Application filed 1111 2,

the following description, taken in connection with the accompanying drawings forming part hereof, and in which V i Figure 1 is a vertical sectional 'view of a preferred embodiment of the invention, taken substantially on the center line thereof. Figure 2 istranverse sectional view taken on line 22 of Figure 1. Figure 3 is an end view thereof, parts being broken away to disclose the interior construction. t

Figure 4 is a. plan view of the burner drawn to an enlarged scale, partially in section and having a part of the cover broken away to see the'interior elements.

Figure 5 is a tranverse sectional view taken:

on line '5 5 of Figure 4.

Figure 6 is a central vertical sectional View of a modified form of construction without a boiler.

Figure 7 is a transverse sectional view taken on line 7-"? of Figure 6.

- Figure 8 is an end elevational View: of thesame.

The heater consists of a plurality of upright hollow elements of rectangular cross section having abutting faces held in tight, rigid relation by any of the means usually employed for such purpose.

The end elements 10 are supported preferably on legs 11 and have at their upper ends inre'aching ledges 12 to support a boiler shell 13 having a domed top and provided with a safety valve 14 and plug'15.

A water inlet pipe 16 enters'at one end of the boiler and an outlet pipe 17 is connected for delivering steam as may be desired; the boiler is also provided with a water glass 18 and blown off cocks 19 in the customary manner.

Between the end elements 10 are other similar elements 20, 21 and 22 all being arranged in a level plane uniform with the outer elements, both at the top and bottom, and all being open at the top to spacedly receive down-reaching hollow .water legs 23 1927. Serial No. 203,029.

in opencommunication at their upper ends Withthe interior of the: boiler 13, these legs to their bottoms. 1

of elements, is a rectangular. combustionchamber 25 surrounded by: a space 26 and blending into an enlarged fire box 27 lined. with refractory brick 28 atits sides and; havhaving separator plates 24 extending nearly .60 At the center, between the innermostv pair ing an opening in its bottom through which a burner is entered. v

The burner is supported spaced cross beams 30 removably secured-to the bottoms of theelements 22 and consists of a hollow rectangular base. 31 having an upper flanged section 32 and containing between them a circuitous mixing chamber 33 on a; pair of provided with an opening in the front wall.

Fixed in the opening is a vVenturi mem-' ber 34 containinga contractedopening 35 leading outwardly to an air receiving chamber 36 formed in the conical outer element 37 of the venturi, the same having a flanged connection to the burner base andcontaining an opening engaging the outer end of the element 34 which is used in preference to a Bunsen type of burner.

In the outer wall of 37 are a plurality of orifices 38 for the inlet ofiair and'at the center is a threaded opening to adjustably receive a hollow screw 39 in which is a sleeve 40 carrying at its inner end a gas discharge nozzle 41 in axial register with the opening 35' through the venturi.

Carried at is a right angled connection 42 leading to a valve 43 beyond which is a manually operable valve 44' by which the flow of entering gas is adjusted.

Extendi. g from the base element 31 are a plurality of spaced upstanding cylindrical bosses 45 containing bored openings 46 communicating with the chamber 33 and set in a cover plate 48 common to all.

the Venturi element their upper ends are sleeves 47 which enter Set in thebottom wall of the base member 31 are tubes 49, extending in concentric 4 spaced relation through the'sleeves 47,1evel with the face of the cover, these tubes constituting, in combination with the sleeves, a

form of burner tip, supplied with a suitable gaseous mixture from the chamber 33 and also with atmospheric air through the tubes 49.

As has been noted these burner tipsare arranged in the form of a hollow parallelo gram, and arranged over each burner 1s a hollow rectangular radiant to receive the fuel mixture which is ignited at the several openings 50 therein, the flame being directed upon the bricks 28, these radiants being Also reaching upward from the base sec tion 32 are supports 44 on which the cover 48 is seated as best seen in Figures 4 and 5.

Disposed over the radiants 50' is a hollow deflector 53, supported by the lower end of a short, central leg 54 in open communica' tion with the boiler 13. Y i

Leading oppositely outward from the combustion chamber 25 are outlets 55 communicating through registeringropenings 56, 57 58 and59 near the upper endsof the elements 22, 21, 20 and 10, the spent gases returning through openings 60, 61,62and 63 to the space 26 and thence outward through a vent Gtto the place of disposal."

In the modification shown in Figures 6, 7 and 8 the boiler is omitted and the-device arranged as a plain radiator for direct heating.

I11 this type the device is composed of two hollow end members 70 provided with legs 71 and having between thema series of hollow elements 72, 73 and 74 at each side of the structure. 7

An intermediate 1nember 75 at the center containing .a combustion chamber-76 open downwardly into a rectangular fire. box 77 lined with refractory bricks? 8 and centrally in the space therebetween are a rowof radiants 7 9 to which combustible gases are delivered through'a venturi' generally designated by 80, of the same general type as previously described. I

Leading oppositely outward from the combustion chamber 76 are registering openings 81,82, 83 and 84 thelastopenings communicating with the chambers in. the end elements- 70, heat passing from them through openings 85, 86, 87 and 88 in the adjacent mem bers 72, 73 and 74 to a'passage 89 and'thence outward through a vent 90 to the atmosphere.

Safety valves 91 are also provided for sudden-accessions of internal pressure.

Due. to bafHes-winterposed' in' the several hollow radiator-elements it will be seen that hot gases from the burner are compelledto pass in a tortuous path circuitously through the several elements, the effect being to impart a great proportion of the heat to the thin walls ofz-the radiator whereby the same maybe radiated usefully outward.

The substitution of a Venturi device for controlling the entering gas and air as shown best in Figure 4 in place of a common type of Bunsen -burner, to heaters of the class described have been: found to be an a'dvancein 1- the art'of great importance. 1 I 1 Although I have described my improvements with.considerable detailand with rierspect to certainparticular formsof my in-* vention, Ido not'desireto be limited-to such details sincemany changes and modifications .76.

.may well be made-without departing from; the spirit andscope of nay-invention in its v broadest aspect. Having thus described by invention what I claim as new and desire to secure byLet zso ters Patent, is;f

1. A heater having-a combustionchamber, a brick lined fire box therebel0.w', a-series of radiants spaced inwardly fromthelininggi an air inlet tube for each-radiant, a mixing chamber with which the radiants communi-= cate, a venturi to discharge air and gasintowv the mixing chamber, means for controlling-1,. the air passage in the venturi, and a valve controlling the inlet-of fuel-to said venturi.= 2. A heater-provided withv a combustion; chamber having a, brick lined, firebox, a fuel v mixing chamber below said .box,-ia. cover place on said chamber, a series 'of radiants fixed on said plate to extend into saidwbox 95 said radiants communicating iwith themix-- ing chamber, a Venturi tubedischargingea mixture of combustible gases into saidxmix-i ing chamber, a valve controllingthe inlet of fuel to the venturi, and a separate air. inlet: 1 to each radiant. 3. A gaseous fuel heater comprisingva} rectangular combustion chamber-having fire-i. brick walls, a plurality of radiants-in said 4 chamber, a hollow circuitous mixing diam-.1 5 ber below the radiants and in communication therewith, tubesfixed in said chamber-to conduct atmospheric air to said radiants cen- 7 trally of the mixing chamber passages, and independent separately controllable means no to control the entry of air and gas to said mixing chamber.- v

Signedat New York, in the county of New York, and State of New York,- this: 5th dayj of March, 1927. 7 v JOHN ROSS. 

